uae_mbresmem_size

The option documentation is properly formatted yet

Description: Size in megabytes of processor slot fast memory Default: Range: 0 - 131072 Type: integer

Implementation: UAE code refers to this as mbresmem_high_size.

Source: https://github.com/FrodeSolheim/fs-uae/blob/master/docs/options/uae_mbresmem_size